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A method for acidification formation a long-life lead storage battery

A lead-acid battery, long-life technology, applied in the direction of lead-acid batteries, lead-acid battery construction, secondary batteries, etc., can solve the problems of early muddying of the positive plate material, short life, etc., to increase the ratio, reduce polarization, ratio The effect of contrast enhancement

Active Publication Date: 2019-01-04
TIANNENG BATTERY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problems of early muddying and short service life of the positive plates of lead storage batteries in the prior art, the present invention provides a long-life lead storage battery acidification method

Method used

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  • A method for acidification formation a long-life lead storage battery
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  • A method for acidification formation a long-life lead storage battery

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Experimental program
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Effect test

Embodiment 1

[0029] Get the 6-DZM-20 battery semi-finished product, adopt the method of the present invention to add acid and form, the sample preparation process is as follows:

[0030] 1) Adding acid for the first time, add a density of 1.05g / cm2 to the lead-acid battery to be added 3 Sulfuric acid solution, the acid volume is 148ml (single cell saturated absorption is 163-165ml, which is about 90% of the saturated acid absorption), and the acid is added in vacuum, the vacuum degree is -0.08MPa, and the vacuum is 1-2 times .

[0031] 2) After the battery that has been added acid for the first time is left to stand for 1 hour, a safety valve is installed and the first stage of the formation process is started, at 3.6A (the current density is 5mA / mm 2 ) Constant current charging for 21h (charging capacity 75.6Ah, 3.78C).

[0032] 3) After the first stage of formation is completed, add acid to the battery for the second time, using vacuum acid addition (vacuum degree -0.08MPa, vacuum 2 to...

Embodiment 2

[0036] Get the 6-DZM-20 battery semi-finished product, adopt the method of the present invention to add acid and form, the sample preparation process is as follows:

[0037] 1) Add acid for the first time, add a density of 1.10g / cm2 to the lead-acid battery to be added 3Sulfuric acid solution, the acid volume is 155ml (single-cell saturated liquid absorption is 163-165ml, which is about 94% of the saturated acid absorption), and the acid is added in vacuum, the vacuum degree is -0.06MPa, and the vacuum is 1-2 times .

[0038] 2) After the battery that has been added acid for the first time is left to stand for 1.5 hours, a safety valve is installed and the first stage of the formation process is started. 2 ) Constant current charging for 38.9h (charging capacity 70Ah, 3.5C).

[0039] 3) After the first stage of formation is completed, add acid to the battery for the second time, using vacuum acid addition (vacuum degree -0.08MPa, vacuum 2 to 4 times), the acid density is 1.5...

Embodiment 3

[0043] Get the 6-DZM-20 battery semi-finished product, adopt the method of the present invention to add acid and form, the sample preparation process is as follows:

[0044] 1) Add acid for the first time, add a density of 1.20g / cm2 to the lead-acid battery to be added 3 Sulfuric acid solution, the acid volume is 165ml (single-cell saturated liquid absorption is 163-165ml, which is about 100% of the saturated acid absorption), and the acid is added in vacuum, the vacuum degree is -0.1MPa, and the vacuum is 1-2 times .

[0045] 2) After the first acid addition, the battery was left to stand for 0.5 hours, then a safety valve was installed and the first stage of the formation process was started, at 3.6A (the current density was 5mA / mm 2 ) Constant current charging for 22.2h (charging capacity 80Ah, 4.0C).

[0046] 3) After the first stage of formation is completed, add acid to the battery for the second time, using a vacuum acid addition method (vacuum degree -0.08MPa, vacuum...

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Abstract

A method for acidification formation of a long-life lead storage battery is disclosed, the method includes the following steps: 1, adding acid to a lead storage battery for the first time, adding lowspecific gravity sulfuric acid solution with density of 1.05-1.25 g / cm3 to lead storage battery to be acidified, the adding volume being 90-105% of saturated acid absorption capacity of the lead storage battery; 2, formation in the first stage, charging, wherein the total char electric quantity is 3.5 C - 5.0 C; (3) adding acid for the second time, adding high specific gravity sulfuric acid solution with density of 1.25-1.65 g / cm3, and filling; (4) forming in the second stage, first discharging and then charging, the depth of discharging is 25% - 80%, the total charge quantity is 3.5 C - 5.0 C; (5) Extraction of residual acid. As the acid is added in two times, the specific value of the positive electrode active material alpha-PbO2 / beta-PbO2 can be effectively improved, the service life ofthe battery is prolonged, the polarization can be effectively reduced, the formation efficiency can be improved and the formation period can be shortened.

Description

technical field [0001] The invention relates to the technical field of lead storage battery production, in particular to an acidification method for long-life lead storage batteries. Background technique [0002] Lead-acid batteries have a history of more than 150 years and have been used in a wide range of fields. In recent years, electric vehicles have developed rapidly in my country due to their better mobility performance, lower storage space requirements and excellent price advantages. Thanks to this, the battery industry has also developed rapidly. [0003] Lead storage battery is a reversible DC power supply, which can convert chemical energy into electrical energy, and also convert electrical energy into chemical energy. Lead storage battery is mainly composed of electrolyte, tank cover and pole group. The electrolyte of lead storage battery is sulfuric acid solution. The pole group is mainly composed of positive plate, negative plate and separator. The separator is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/36H01M10/44H01M10/12H01M50/609
CPCH01M10/12H01M10/446H01M50/60Y02E60/10Y02P70/50
Inventor 李桂发赵海敏郭志刚崔海涛刘玉邓成智李亚田庆山李丹
Owner TIANNENG BATTERY GROUP
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